40823831 has 2 divisors, whose sum is σ = 40823832. Its totient is φ = 40823830.

The previous prime is 40823801. The next prime is 40823857. The reversal of 40823831 is 13832804.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40823831 is a prime.

It is a super-2 number, since 2×40823831² = 3333170355033122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 40823794 and 40823803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40823801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20411915 + 20411916.

It is an arithmetic number, because the mean of its divisors is an integer number (20411916).

Almost surely, 2^40823831 is an apocalyptic number.

40823831 is a deficient number, since it is larger than the sum of its proper divisors (1).

40823831 is an equidigital number, since it uses as much as digits as its factorization.

40823831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 40823831 is about 6389.3529406349. The cubic root of 40823831 is about 344.3271377582.

The spelling of 40823831 in words is "forty million, eight hundred twenty-three thousand, eight hundred thirty-one".